13424433511523 has 4 divisors (see below), whose sum is σ = 13425936984840. Its totient is φ = 13422930038208.

The previous prime is 13424433511493. The next prime is 13424433511561. The reversal of 13424433511523 is 32511533442431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13424433511523 - 2⁶ = 13424433511459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13424433514523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751723265 + ... + 751741122.

It is an arithmetic number, because the mean of its divisors is an integer number (3356484246210).

Almost surely, 2^{13424433511523} is an apocalyptic number.

13424433511523 is a deficient number, since it is larger than the sum of its proper divisors (1503473317).

13424433511523 is an equidigital number, since it uses as much as digits as its factorization.

13424433511523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503473316.

The product of its digits is 518400, while the sum is 41.

Adding to 13424433511523 its reverse (32511533442431), we get a palindrome (45935966953954).

The spelling of 13424433511523 in words is "thirteen trillion, four hundred twenty-four billion, four hundred thirty-three million, five hundred eleven thousand, five hundred twenty-three".